Door operating and locking mechanism



Nmlll, 1930. A. PERLMAN DOOR OPERATING AND LOCKING MECHANISM Filed April 1o, y195o 4 Sheets-Sheet l INVENTOR MC1/M4 n/45m I FYMMA. ATTORNEY Nov. l1, 1930. A. PERLMAN DOOR OPERATING AND LOCKING MECHANISM Filed April l0, 1950 4 Sheets-Sheet 2 ATTORNEY INEA/To Nv. 11, 1930. A. PERLMAN 1,781,291

DOOR OPERATING AND LOCKING MECHANISM Filed April l0, 1930 4 Sheets-Sheet 3 INVENTOR. Mwzagm,

BY Z

A TTORNE Y Nov. l1, 1930.

A. PERLMAN DOOR OPERATING AND LOCKING MEG Filed April 10, 1930 HANISM 4 Sheets-Sheet 4 @Qa/EM 12%' TTQRNEY Patented Nov. 1l, 1930 unanimi-Es PATENTOFFIC'E 'l fAnRAHAMPERLi/IAN,

` i i noon` OPERATING IAnn Appneaam alle .A ,rn 1o,

l This invention relates"i door operating and locking mechanisms and is particularly designed for use in connectionjvith the cell mechanism.

doors of aiprison.

The

Object of theinveari is as provide a.

positive mechanically operated mechanism Vby means of Which each and every door 1n the system may ,be locked in either open or closed position "and when unlocked may be' opened or ,closed the positive mechanism operated `by the keeper p from any distant point,fsuch as outside the corridor from a control box to Which he has the key to render the mechanism accessible for operating the doors.

The doorsY maybe conveniently ar.-

ranged and connected in groups and anyor all ofthe doors of one group, or of all groups, operated from the control box. Also, any door or group of doors maybe openedand locked in their respective open positions Without` interfering with. the operation of thel other doors. p k

` To carry out theabove and otherobjects of" the invention, which Willfappear from the description `of the mechanism illustrating the same hereinafter, positive` mechanical devices are employed, which are. simple in their construction and not easily tamperedwith or prevented from performing their required purpose and function `and `Whichiareeasily operated by the personauthorized, all of Which with the description of .the operative embodiment of thewinvention illustrated in the ac?. companying drawings, showing the same asf designed Vand applied toy a group of sliding` doors.

will appear inorefully in connection.

meral.

Fig. 1 is `front elevation, 'partlyl p `section, of a .part of the doors and operating f 10". Fig.

2 is an "enlarged `detail of one of 3 is a section on the line of Fig. 2. 4 is a plan view'of Fig. 2. 35 "is a sectional view of the-operating or NEW Yemen Y.

LOCKING MECHANISM Ai930. seriei No. 443,057.

mechanism in thecont'rol box, being takenon the line 5-.-5 yof Fig. 6. e

Fig. `6`is a front elevation, partly in section, of the operating mechanism in `thecontrol box, being acontinuation of the left-` hand'end ofFig. 1.

' Fig. 7 is a detail view, in perspective, of the clutch'` disks,j showing the same separated to show their construction.`

e Fig. 8 is a detailview, in perspective, of 301 the locking-and releasing dog. x

Fig.\\9 isfan enlarged detail front View of one of thedooroperating and connecting bolts. n l 1 f Fig. y10 is an enlarged detail the control wheels and dials'.V e

' Fig. 11`is"a vievv similar to `Fig.`2,` showing a modification of the individual `door locking and releasing devices. p

Fig. 12 is a sectional view on the line 12-12 740` o f Fig. 11,.'l e

Fig. "13 is a fragmentary sectionalvieiv of a modified form of the operating mechanism inthe control boxfor operating the form of door locking and releasing devices shown in F igs. I11 and'12. Fig. 14 isa sectional view on the line 14-14; of Fig. 13. e Theactuating mechanism for opening and closingthe doors is substantially the same for 30l "eitherfform of selective control mechanism forlocking and unlocking the doors and connecting the selected door tothe actuating mechanism.

This actuating mechanism comprises an g5 actuating bar 9 mounted for longitudinal movement, riding on the rolls 1() which roll on the upper face ofthe rail 7, the movement being restricted by the lugs l10n the upper face of said rail 7 The bar 9 is also held in 90 position'on the rollsl() by the guide rolls 12 carried bysupports 18 from rail 7 This actuating bar 9 cai-ries a number of lockin'gpins, one for each door, as indicated at lil-let', one of Whichis illustrated in d'e- 95` tail' in Figs. 2, 3` and 9. These pins 14 are mounted for free vertical movement in guides 15M `on the lactuating bar 9 and are positioned to engage `in aslot 16in thebar 3 of the door structure and when so` engaged.- connect 100 ioY the door 4with the actuating-bar 9v and by means ofwhich theV several doors are, selectively, opened and closed bythe movement of thebar 9.

. An upper control shaft 17 carries two disks, 18 and19, for each door. These disks Aare positioned adjacent eachwotheron the shaft 17, the disk 18 being' attached to said shaft 17 while the disk 19 is freely rotatable thereon. A gear 2O is attached vto the disk V` 19 which meshes withV a ge`ar21fattached 'to Y combination' of groups. Inv the arrangement as illustrated, twenty doors are provided ,for aint-arranged in rgroups often and the several;

ment on the several disks and spaced 12() deg.,

the lower shaft 22. The doors may be arranged in'any desired disks are provided with notcheswhilch vmust he brought-into register beforetheparticular door canbeoperatedw The disk 18 is--pro' y vided with a notch123fand successive disks "for adjacentdoors are providedwith. simil lar notcheswhich are spacedsuceessively around the periphery,-as indicated atv l232%: in

Fig 3 Alike arrangementsofinotchesiin:

the yothery group of .ten isprovided. yEach [disk 18 also has an vadditional notch 28, all

ofwliich arein alinement andy utilize/dior operating;v 'all of the doors simultaneously,

as will be explained. The disks 19are also;

divided into two. groups of `ten and? each ,disk

register with one otthe-v notches 23.012 'the disks18 of the first group. The other group of disks 19 is provided witha similarnotch spaced; 120] deg. from the notch for the -lrst group and which may be brought linto regis-l` ter with one of thefnotches 23' of"thesec'oiidV Y,

Y v casing 64 .the4 Lipper ends of the levers-43 group of diskjs18.

fkllof the disks additional notch 25 which are all "in alfinefrom the` notch 24. This latterjnot'ch 25 is utilized to permit the operation ofkall doors bv bringing`- yit intov'register withi thefcominon notch23f of the disks 18.-" It will thuslbe noted that each-disk isprovided with twovv notches, one for they selectivel operationyof any door and one for the com-monoperationof all doors, simultaneously. Y f A lockingy and releasing dog 26is onecofrtliese dogsA being provided foreach door, in. connection lwithfthe disks 1S, and; 19. This dog is provided with a lugr 27 4which engages in: the notches A23-24 of thedisks 1.8-19 wheirthe notchesl are brought finto aline'ment, as shownin the fullr linepositionl in Fig,.3.v The dog `26is also provided with an sai-"i238 whichis! designed tov move into the slot 16 in the bar 3 and engage the lower end of the locking pin 1 4 and raisethe same outofengagement withfthe bar 3 and releasethev doorfrom the actuatingbar'Q and also lockingfthe-door gagainstmovement while thedog;l ismaintained iny the l`position,v indi-,l

19 arejprovided with; an'

Y v mounted: for free lmovement about lthe lower shaft 22,

the same and permits kthe dog 26 and its year 28 to fall into the full line position Vof Fig.

wpermittingl'thefpin 14 to fall into the -slot 16 andsoconnectrthe door withthe ac- Y tuating bar'9. AV`Thismovement of the dog' 26 also lmilocks they door, as will be seen by v reference tothe dra'wings.y It will be under-V stood also that thisY ,operation is.. performed for I one :or more (doors,

all.doors.simultaneously u,

- The control mechanism is'showiiin Figs'.

5,6 kvand- .10 and is afcontinuation ooligg.V 1 .1

selectively, j or -or. Y

to 'the lfeitlhanrhV as willlbe understood: byf

reference.tothejdrawingsr A beveligiear-29 isattached to the end of shaftf17 and meshes -with the :gear 3Q at ,the;

' Y Y whichis a gearx32meshing'with a larger.l

upper end, Aof shaft. 31, at .the lower` end off gear 33v (approximately thev ratio o ftwo to` one), Vwhich lattera'ris niountedon. av v "shaft34- operated-'by thehand wheel. y f

AA bevel gear 36 is attached at the end'of shaft 2 2 and meshes with a gear 37 at the end ofa shaft 88, at thelowerend-fof which al..geari"39'v is mounted and meshing'A withfthey gear Altoona .fshaft41 operatedfbylthe handr pairV offglevers, mounted at 46 and'46, respectively,finthe and 44 being connected: bynthe cros'syb'ar, which forms. aconvenient handle/45.A A f' link 47 is connected at one vend to-L the; lower -endl ot lever Q43 at 48 andatits luppeijend 49 connectedlto .a bellcrank lever5'0pivotally mounted atV 51v tothe casingl- The?opposite end of the lever.50.is connected at 52 to a link 53 which, in turn, fis .connected aty 54 tol the lever` 55. 'whichis pivotally mounted at its lower'end 56 and connectedat its upper end 57 toaconnectingbar58;. Af guide railf() Yis,engaged,bya guide roll l59` carriedfby the lever, the kroll 59y being provided with angies maintains the several members iiifpo i sition. and alineinent during theirmovement, as lwill be understood. l Y

AtV the innerendy of the connecting bar `58 a ,eear 61 ismounted, .which gear rides Vupon a fixed Lgear rack 62 and operates a movable isa:

gear rack '63 engagingits upper side, wliiclilatter rack -is attached tothe actuating loa-r9. Y j

The effect of this connectionis-toiimpart twice the amount ofvflinear movement to the.V ace,` tuating barv 9 as is imparted tothe-.bar 58,

as will be understood.- y The Venclosingcasing64 .for the control shown in tliejdrawing, and a. removable door,

c l65,-is provided with suitable` locking means,

which prevents access to the control and operating` mechanism exceptl when the door 65 isopened by thekeeperor other person pro-,

vided ,Withthe key thereto.

'The yoperation` ot the controlmechanismI will be understood by reference to the drawings and' the explanation hereinafter.

"lheactuation ofthe operating mechanism is also` apparent ironia' reference t'o Figc. 5 and6, iii-connection With ,the `ij'oreg'oing description ot' the partsthereot. Briefly outlined, thedoor 65 is opened and the handle grasped by the operator and pulled downwardly, moving` the lever 43` about its pivote 46, raising link 47 and swinging lever 50 about its pivot 51, niiovi'ng `link 53` and lever 55 aboutits pivot 56, thus imparting movement .to the connecting` `bar 58 and the actu-` ating` barjQ through the action of the gear 61..on the racks 62 and 63, as Will be understood. i i i A dial 66 is mounted on the shaft 41 operi ate'dby the hand Wheel 42.4 This dial carries three marliinps,"'tor` the arrangement illustrated, Open 1 to 10, Open 11 to 20 and Open all, which are brought, respectively,

in register with the opening in t-he plate iininediately in front ofthe dial as shown in Eig; 10:1` A second dial 67 is mounted on the shaft 34 operated by the hand Wheel35. This dial carries the numerals 1 to 20 and the designation All, which are brought,

respectively, in register With the openings y marked Stop and Open in the plate 4immediately iii iront of thedial, as shown. The numerals indicate the number of the several cells, which, in thepresent illustration,

-are twenty in number andV divided into tivo I it beine` understood that i'or the purposesol illustration only two doors are shown and the mechanism is only described in connection With one door. il bar 3 is attached to the T-bar 2 and extends on either side of the door structure. This bar 3 carries `the rollers v4 which ride upon the track 5 ivlientlie door is opened and closed by the actuating mechanism.heretofore described. il, housing 6 encloses the mechanism Vand a `@guide rail? is engaged onits under. sidehy rollers 8 carried by theA door structure tohold the door rollers 40u the track 5'. These rollers are also preierably flanged to prevent the same from leavbrieliy statedas follows z-y-l-lssume'that door to cell No'. 12 is to be opened.` Hand `Wheel 35 is rotated, counter-clockwise, to bring the numeral l2 on the dial 67 in register with .theopening marked Stop and the dial 66 is then set, by rotation ofthe hand Wheel 42,` so that the designation Open ll to .is in register with the plate opening, as shown iu Fig'. l0. 'lhe hand wheel 35 is noiv moved", in the opposite direction (clockwise) bringing the door designation numeral l2 on the dial 67 in register `With the` opening marked Open, as shown in Fig. 10.

y The rration` ot the liandjwheel rotates the upper shaft 17 and brings the notch 23 inthe disk 181er the door to cell No. l2 into Wheel 42 rotates the lower shaft 22. and gears 2land'20-q` l i The disk 19, operatedby the gears 21u20, is thus rotated to bring the notch 24 toits lower` position in register with the `notch .23 ot the disk 18. Upon reaching this position, the dog` 26 previously locking this door drops from its position as indicated by the dotted, outline in Fig. 3 to the full line position, this movement ofthe dog 26 being rendered posi# tive by tlieniovement of the hand Wheel 35 Yfrom the Stop to the Open indication,` as previously explained. The locking pin 14 noiv `drops into the slot 16, connecting this door with the actuating bar 9, which is then moved by means of the handle and connected. mechanism, previously explained, and slides the doorto its openposition, in which position it may be locked, if desired, by mov"` inn; the hand wheel 35 back to the Stop7 position, moving; dog 26', by means of a like arrangement ot disks, 18 and 19', with gears 20 and 21 and associated parts mounted op-` posite the open positionof the door. This` particular door is thus locked iii its open position l'and the mechanism may then be `re-set for operating other doors,.as desired,

in the same manner.

Theoperation to openall of the doors simultaueously is accon'lplishedin a similar manner. The dial 66 is set `for Open all and dial 67 lor.All, bi'iiiginp,` the notches 23 and 25 on all disks 18 and 19, respectively, in register and permitting all of the' dogs 26 to drop simultaneously "and all of thelockinnr pins,` 14 to fall into their respective slots and thusconnect all? doors With the actuatingir bar 9,` `which lis then operated in thesa'me manner as heretofore described and, as will be readily understood, opens andcloses any or all doors thus connectedthereto.

The modification shownin Figs. l1 to 14 is a simplified arrangement suitable `for a the lower position. T he rotation of thehand` eial construction and operation toftli'at just -describec'lin connectionwvith Figsfl to 10.

As shown'in Figs. 18 'and-`14,ftlie hand YWheel 35 v'and dia-ld 67"` correspondto then hand Wheel '35 and dial 67 of Figs. 5,16 and 10;l lThe hand lWheelv 35 lis attached toa sleeve 34:which is freely rotatableon the shaft 71. .sleeve 34', which also carries yand rotates; a bevel gear 33"'mesliing 'With the gear 32 on the loiver end of shaft 31. This shaft 31 operates'ishaft 17 ,as shown in Figs. 5. and,

k6, together with the series ofdisks'l, one `Vfor each door, Which disks are each" provided with tivo notches, 23 and 23, f the notches 23 on successive disks beingspaced circumferentially to provide an individual setting ot tliedisks foreach door, ivhile'the notches 23are in the ksame relative position on each disk, providing for unlocking all cioors simultaneously. f A l r. f

Hand Wheel 70 (Figsjl and 14) rotates kshaft 71, which carries a crank 72y at its innerfend, connected by al .link 7 3 to a second crank 74 attached to thel end of the sliait-22, shown in Figs. 11y and- 12and corresponding to thefshaft 22 shown-in Fig. 1.

In'this modification vsliovvn in Figs. 11Y

to14, individual. dogs 26 are provided for each door and are mounted or carried on the yshaft 22'but notattached thereto. These dogs areprovided with lugs 27 engaging lin. the notches 23er 28 in theV disk18 attached to the shaft 17'and are also provided With ears 28iforoperation lof the locking pi'ns14` into andeutet operative engagement With the door vstructure and actuating bar 9. Thi s part' ofthefmechanism is the same as de-V scribed. in connection'with thedevice as shown in: Figs. 1 to 10.*: Y

VThe operation of these kdogs 26 in the modiii'ca-tion sho-Wn in Fifgs.y 11 to 14 is' soniewhat'difierent and simplified, beinglintended for use Where a small'numberi of doors are to beA operatedfalthough the general fea-v tures of operation are practically the samer An operating finger 75 is attached to the shaft-22radjacent `eachof the dogs 26.

A pin 76 on each of these "operating iin-l gers 75 extends back ofthe dog 26 and When thefinger 7 5l is operated, `by the handwheely 7() rotating shaft 22 vabout 45 deg., the pin 76 engages the dog 26v andmoves the same vfrom the full'linev positionv shown in 12 to thedotted position or'vvhen moved in the opposite direction permits the Ydog- 26 to bemoved by theV rotation of the disk 18 on the shaft 17 operated by ltlie'hand Wheel jintotlie unlocked position, in whichk pe,k

sition thelocking pin 14' falls' into engage-.-

ment with the door structure', connecting the door with .the` openingV mechanism.

tion. ItlW'ill'be noted from Figs. 11. and 12 kgaged byvfthe'fingerv the'face oi" the dog'26. g The :purpose oit' this The dial 67 is `carried by the- 'bar.` Y

The operation ofthe actuating bar Aby the to engag These operating fingersalso perform another functhat 'a 'projectingv lug 77 extends from the y door structure bar intoa position to'be engaged bythe finger 75 Whenf the same is moved' to itsinnerfposition, Which corre-` spends tothe locked` positionof the'idoor. Also, the adgacentivface ofthisjlug- 77 `en,-

o is slightly".y beyond is to prevent'tlie Ainmate fromy forcing the dog free to be operated,v

The operation of this form of anismV (Figs'll to 14) is similar to that previously described. The dial 67 is operated *by the hand Wheel Bto bringv the numberl designating the particular door under the v opening marked Stop The hand Wheel 70 is then rotated about 45 deg., movingthe iinger 75,1to the position shown infull lines in Fig. 12, disengaging the lug 77. fHaridy VWheel 35 is thenrotated to bring the door numeral from the Stop"'opening Vto the Open designation, which rotatesvv shaft17 the mech7#l and disk 18 causing the dog`26 for that par- 1ticular door tofbe moved, by Vthe, enga-ge-` lment of the lug 27 n in the slot 23, to lits Vopen position, this being indicated'v in full lines in Fig. 12,- permitting` the lockingpin 14 to drop,l connectingthe door and actuating handle 45 has been described heretoforel in connection With the illustration in F igs.` 1

slidable meniberl'S in its inner position aga-inst the spring 7.9i The outerend 0'1"' the slidable member78 is provided with projec? ions adapted to be'engaged in corresponding notches in a segment 82, attached to the ltov 1). lnrthe modificationfshovvn in liigs.' 13' Y 1 Y v L` and14 a. positive lock is provided to lock the operating handle ini any intermediate posi-Y ion. 'As there zshoivn, thiscompiisesa slid` able member 7 8 mounted on the side lever 43 casing. This may befutilized in case an vin-`V mate jams the door Othis cell as the same is being'epened ei' closed `by the movement of* A the lever 45, in which case the operator releasesthe la teli Si, .permitting the member 78 nicchanioia', and the Ydoor being operated against movement. l

As the kgeneral features of operation are the same 'foi' not ,thoughnecessaryto further describe the same in connection Withtthis latter modification.

the segment 82 and hold or lock theA either forni of the device, it is AThe locking device, VcomprisingtheV segment 82, slidableinember 78 and associated l Y parts, also provides for locking a door being other of saiddisks being mounted adjacent operated in any intermediate position against theretoand rotatable thereon, said disks beinoveinent in either direction. Also, when the ing provided"V with notches 1which` when operating handle is in its closed or locked position, as shown in Figs. 6 `and 1.4, the pivot center 48 is slightly east the center line through pivot centers Liii-49, thus prevent-` ing the same being forced open by movement of the doo-rs, or attemptedmovement of the same or the actuating bar 9 or associated parts. y What l claim as new and desire to secure by Letters Patent is y l.V Door operating and locking mechanism of the class described comprising the combiV nation with a. number of cell doors each indepeiidently mounted and adapted to be moved into open or closed position, of an actuating member extending adjacent and adapted to" be operatively connected to a predetermined number of said doors, a separate locking pin `for each of said doors adapted to operativelyi connect said actuating member with a predetermined number of said doors, a separate locking dog for each of said doorspivotally mounted and adapted to be swung into position to selectively disengage said locking pins from `one or more of said doors and to lock said doors against movement, a shaft upon` which said locking dogs are pivotally mounted, a second shaft, a pair of control disks for each of said locking dogs, one of" said disks being attached to and operated by' said second shaft and the other of said disks' being mounted adjacent thereto and rotatable thereon, saidv disks being provided with notches which when brought into register permit theoperation `of saidlocking dog,"

`means operatively connecting said rotatable" disk with said first named shaft for bringing` said notches intoand out of register, means' for independently rotating said shafts, and`` `,means for operating said `actuating member to open and close said doors.

Door operating and locking mechanism ofthe class described comprising the combination with a number of cell doors each independently mounted and adapted to be moved"` into open and closed position, of a longitudiberof said doors, a separate locking dog for each of said doors pivotally mounted and adapted to be swung into position to selectively disengage the locking pins from one or inoreof said doors and to lock said doors against inovement,a shaft upon which said Alookin@- doos are oivotall mounted a second t1 tb i 7 shaft, a p airof control disks foreach of said locking dogs, one of said disks being attached to and operated bysaid second shaft and the doors.

Vand out of register, means for independently rotating said shafts, and means for operating said;actuatingbar to open `and close said 3J In' adevice ofthe classv described, the combination with operating mechanism for opeiiinglandclosing awnuinberof cell doors, `of lockingineans comprising a pair ofshafts, al -pluiality of locking vdogs pivotally mounteduponone of saidshafts, eac'hof said ldogs 'ha vingfa portion adapted to beeiigage'd with onelof said celldoors'tolock thesame in position and als'ohavingfa portion adapted to be engaged `by operating disks` mounted on lthe second of-said shafts, a pair of operating disks mounted on said last named shaft, one b'eing iixed and one being lilotatable thereon,

lsaiddisks being provided with notches which :when brought into register permit the operation of said locking dog by rotation of said last named shaft-and disk` lined thereon, rotatiiig means operatively connecting said `rotatable` disk and said `firstnamed shaft for adjusting the relative positiorr` f said "disks byfrotation of said shaft, andiindependent inaiiually operated meansxadaptedfto `i"ota"`te 'said Vshafts and disks, one" `"selectively adjustingthe relative positionof saiddisksand `one 'effecting the yoperationjof said locking dogs. 2l.` I-n`a` device of theclassdescribedfthe `coinbiiiatio"n withtopening and closing mech- ;anisiniforla number of cell doors, of connectingineans for operatively connectinglone or inorefof said doors* with said `opening `and closing mechanisn'r, locking means controllling said connectingineans and adapted when -iirlitslocking position to disconnect said con- `iiectingmeans and `when `moved `to its un-` lockedl position to` render 1said` `connecting means" operative,;iincans for operating said f1conne'ctiifig means, means for operating said [locking means, and interconnected means between saidtwo `operating means for controllling i ""dfdeterminingthe particular doors to Abeaid'ectedx- 5, In, a deviceof the `class described, the combination with door operating and locking mechanism for selectively locking andl unlocking and opening and closing a number of cell doors, of interconnected manually operated means comprising two separate lines of shafts operating respectively selective mechanism for determining the particular doors to be affected and locking mechanism and operating connection with the said selective mechanism, operating mechanism for opening and closing the aforesaid particular doors determined by said selective mechasaid locking devices, a selective control def .vice operative inconn'ection with eachof said j .'.locking devices 'causing `tlne selected devices. tolbe operatively conneotedWith said first shaft, and manually operated-means vfor opnisrn, land connecting means controlledby theoperation of-said lockingine'chanism for connecting the said particular doors itfitlnsaidV operatingmechanism. i l

v v6.' yIna device oi:' tl`1e combination 'with a number ofv cell doors individually mounted and adaptedto be moved l to open closed vposition, an actuating member common to v aV group of` said doors,

separate connecting devices for 'each ofsaid doors adapted to connect said Vactuatmgmemberiyvitli .a predetermined. number of said doors, separate locking devices foreacliof said doorsl adapted to :lock the same in open Y or closed position, the operation of said lockingdevice controlling the operation yoi" said y connecting devicewby, means of' a member moved into and out'iof operativey .engagement ywith the doorfstru'cture engaging a connect? `ing member of the saidconnecting device and respectively movingthesame out of engagementor permitting the engagement'. thereof Witlijthejdoor "structure, a shaft for operat- Y Y ing said locking devices, asecond shaft operating a selective control device for eaclu of erating saidshafts from a distant point.I

Inja 'deviceV ofV the class described,.the i i l combination with opening and closingmech-- anism for av number of cell doors, ofconnecting :means for,operativelyconnecting one or closingV means, locking means controlling fsaidconnecting means rand adapted when in4 itsllocking position to,l disconnect `connecting means and Wlien moved fromits locking'to its unlocked position to rendersaidV connecting means operative, means for .op--

more of saidljdoors 'with l'said opening and erating saidconnecting means, means for trolling and erated. Signedl at New York city, intliecountyjof .New .York and Stateo'Nevv York,fthis25th operating saidlockingmeans, means fasso- 45 ciated with said locking means',KY adapted rtor prevent theV operation and movementthere- 'v Yot being jammed, and interconnected. meansA r between said two` operating means for oon-V determiningthe door vto ,be opl(ny of March, n.11). 1930.

ABRAHAM ,PERLMAN class described, tlie l 

